Concrete-mixer.



lpartly in section.

CHARLES C. LORENZ, OF DENVER, COLORADO.

CONCRETE-MIXER.

Specification of Letters Patent.

Patented Aug. l1, 1908.

Application led November 9, 1906. Serial No. 342,711.

To all whom it may concern:

Be it known that I, CHARLES O. LORENZ, a citizen of the United States, residing at the city and county of Denver and State of Colorado, have invented certain new and useful Im rovements in Concrete-Mixers; and I do dec are the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification. j

My invention relates to improvements in apparatus for mixing concrete. This substance is composed of a number of ingredients and without the aid of a mixer, the mass has to be shoveled over a number of times before the various ingredients are properly mixed.

The object of my present invention is to thoroughly mix the various ingredients or elements of the mass by simply handling the material once. In other words if the various ingredients are placed in a pile in proper proportions, it is only necessary to shovel this mass into my improved mixer, and after passing through the mixer it will be in a homogeneous or approximately homogeneous condition.

The invention will now be described in detail reference being made to the accompanying drawing in which,

Figure 1 is a side elevation of the apparatus. Fig. 2 is a fragmentary view shown Fig. 3 is a top plan view ofthe same.

The same reference characters indicate the same parts in all the views.

The numeral 5 designates each of two side pieces to which are attached legs 6 located on opposite sides and outwardly inclined to form a suitable support for the structure. The upper extremities of the legs 6 are secured to the rear edges of the side pieces 5. Between the upper extremities of the parts 5 is located a back plate or imperforate board 7, at the lower extremity of which is located a bottom piece 8 which extends forwardly and downwardly from the part 7 with which it forms a suitable angle. To the opposite sides of the bottom piece 8 are secured cheek pieces 9 which are transversely inclined,

whereby the material when shoveled into the apparatus is caused to pass through a comparatively narrow space between the cheek pieces. Forward of the parts S and 9, is located an adjustable plate or board 10 which is movably connected with the side pieces by a bolt 12 upon which the plate 10 is mounted to swing. The side pieces 5 are connected by tie rods 13 having threaded extremities to which are applied winged nuts 14 rovided with arms 15 to Jfacilitate the manipulation of the nuts. If it' is desired to adjust the plate 10 for the purpose of regulating the size of the passage for the concrete, it is only necessary to loosen the nuts 14 on the tie rods 13, when the )late 1() may be swung freely on its ivot lbo t 12.

Through t 1e upper extremities of the side pieces 5 and in the rear of the back plate 7, is passed a rod 16 secured by nuts 17. To this rod is connected the upper extremity of an adjustable leg 18 which is adapted to support the apparatus from the rear. To the upper extremity of the leg 1S, is attached a forked bracket 19 provided with an eye 2() through which the rod 16 passes. This eye is of sullicient size to permit the swinging of the leg 18 laterally as well as forwardly and rearwardly when for any reason circumstances may require.

When the apparatus is in use, it may occupy the position shown in the drawing, that is to say with the sides 5 considerably inclined in one direction from the vertical while the leg 1S is correspondingly inclined in the opposite direction. The degree of inclination may be regulated at will by the leg 1S.

Vhen the apparatus is in use, the material to be mixed is shoveled into the apparatus between the two plates 7 and 10 and passes downwardly to the bottom 8 and thence through the opening 8 between the forward extremity of the bottom, and the adjustable plate 10. The object of having the plate 10 adjustable, is that under some circumstances the product will be coarser and in this event, in order to prevent the apparatus from clogging, it will be necessary to leave more space for the passage of the material. This material after passing through the mixer, falls down underneath between the side legs and the adjustable leg 18. By reason of the. adjustability of the last named leg, access may be gained to the pile of the material underneath, directly from the rear if desired since the leg may be swung from one side to the other as illustrated in Fig. 3. The leg 6 in addition to being secured diespecially intended for mixing concrete, it is evident that it may be employed in mixing any desired materials.

Having thus described my invention, what I claim is:

l. In a mixer of the class described, the combination of two side pieces, with legs rigidly secured thereto at their upper extremities and outwardly inclined from the side pieces, a rearwardly located leg having its upper extremity loosely connected with the structure, forward and rearward plates located between the side pieces and occupying` positions at an angle to each other, a bottom plate located between the front and rear plates, and cheek pieces secured to the bottom plate, the forward plate being pivoted to allow the material to pass downwardly after leaving the lower extremity of the bottom plate, substantially as described.

2. In a mixer, the combination of parallel side plates, front and rear plates located between the side plates, the front plate being adjustable to regulate the opening for the passage of the material, cheek plates also located between the side plates and having transversely inclined faces whereby the material is caused to approach a central point before passing through the discharge opening, and a rearwardly located leg adjustably connected with the upper part of the structure, whereby the leg is adapted to be swung either forwardly or rearwardly, or laterally in either direction. I

3. In a mixer, the combination of side pieces, tie rods connecting ther side pieces, a front plate pivotally connected with the side pieces 'and adjustable by means of the tie rods, a rear plate oppositely located from the front plate, a bolt passing through .the side pieces at their upper extremities, andan adjustable leg having an eye at its upper extremity through which said bolt passes, the eye being sufficiently large to allow the Vsaid leg a lateral range of adjustment, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

y CHARLES C. LORENZ. Vitnesses:

DENA NELSON, A. J. OBRIEN. 

